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Questions and Answers
What is the reference range for Thyroxine (T4) levels?
What is the reference range for Thyroxine (T4) levels?
- 0.9–1.7 ng/dL
- 80–200 ng/dL
- 2.5–5.0 mIU/L
- 0.4–4.0 mIU/L (correct)
What percentage of Triiodothyronine (T3) is derived from the deiodination of T4?
What percentage of Triiodothyronine (T3) is derived from the deiodination of T4?
- 20%
- 40%
- 60%
- 80% (correct)
What is the reference range for Free Thyroxine (FT4) levels?
What is the reference range for Free Thyroxine (FT4) levels?
- 0.4–4.0 mIU/L
- 0.9–1.7 ng/dL (correct)
- 80–200 ng/dL
- 2.5–5.0 mIU/L
Which of the following is the biologically active fraction of T4?
Which of the following is the biologically active fraction of T4?
Which of the following can interfere with the measurement of Free Thyroxine (FT4) levels?
Which of the following can interfere with the measurement of Free Thyroxine (FT4) levels?
What is the ideal use of Thyroglobulin as a diagnostic test?
What is the ideal use of Thyroglobulin as a diagnostic test?
Which assay is used to detect Thyroglobulin, ensuring its detection even when undetectable?
Which assay is used to detect Thyroglobulin, ensuring its detection even when undetectable?
What is the main cause of hyperthyroidism in Graves’ disease?
What is the main cause of hyperthyroidism in Graves’ disease?
Which test is primarily used for diagnosing Hashimoto’s thyroiditis?
Which test is primarily used for diagnosing Hashimoto’s thyroiditis?
How are antibodies against thyroglobulin (Tg) produced?
How are antibodies against thyroglobulin (Tg) produced?
What diagnostic tool is used to confirm hyperthyroidism in patients with an altered distribution of thyroid binding proteins?
What diagnostic tool is used to confirm hyperthyroidism in patients with an altered distribution of thyroid binding proteins?
Which gland is responsible for the production of thyroid hormone and calcitonin?
Which gland is responsible for the production of thyroid hormone and calcitonin?
What is the anatomical position of the thyroid gland?
What is the anatomical position of the thyroid gland?
Which of the following is rich in the amino acid tyrosine and is a major component of colloid in the thyroid follicles?
Which of the following is rich in the amino acid tyrosine and is a major component of colloid in the thyroid follicles?
What is the main function of Type 1 iodothyronine 5'-deiodinase?
What is the main function of Type 1 iodothyronine 5'-deiodinase?
Which enzyme catalyzes the oxidation and binding of iodide with tyrosyl residues on thyroglobulin in the thyroid follicles?
Which enzyme catalyzes the oxidation and binding of iodide with tyrosyl residues on thyroglobulin in the thyroid follicles?
What is the precursor with minimal hormonal effect and stored in the thyroid lumen filled with colloid?
What is the precursor with minimal hormonal effect and stored in the thyroid lumen filled with colloid?
Which hormone is released from the anterior pituitary to signal the follicular cell to ingest a droplet of colloid by endocytosis?
Which hormone is released from the anterior pituitary to signal the follicular cell to ingest a droplet of colloid by endocytosis?
What hormone is considered a prohormone precursor with minimal hormonal effect?
What hormone is considered a prohormone precursor with minimal hormonal effect?
What is the main function of Type 2 iodothyronine 5'-deiodinase?
What is the main function of Type 2 iodothyronine 5'-deiodinase?
What are the effects of Thyroid Hormone on Tissue growth, Brain maturation, Energy production, and Oxygen consumption primarily due to?
What are the effects of Thyroid Hormone on Tissue growth, Brain maturation, Energy production, and Oxygen consumption primarily due to?
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